Engineering geology and ground collapse mechanism in the Chengchao Iron-ore Mine in China
文献类型：期刊论文
| 作者 | Xia, Kaizong; Chen, Congxin; Zheng, Yun; Zhang, Haina; Liu, Xiumin; Deng, Yangyang; Yang, Kuoyu |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2019 |
| 卷号 | 249期号:-页码:129-147 |
| 关键词 | Metal mine Engineering geology Underground mining Karst collapse Mixed collapse Mining-induced collapse |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2018.12.028 |
| 英文摘要 | The engineering geological and hydrogeological conditions in the eastern mining area of the Chengchao Iron Mine are analyzed in detail. The results are combined with the results of site investigations and in situ monitoring data, allowing the characteristics of the ground-surface collapse events to be summarized. The mechanism by which ground-surface collapse is induced by underground orebody extraction or de-watering activity was then investigated. The results show that the ground-surface in the mining areas experienced three collapse processes: karst collapse, mixed collapse, and mining-induced collapse. Karst-collapse sinkholes were found during the construction stage of the mine and are generally formed in the marble part of the marble granite contact zone. These sinkholes show a 'bead-on-a-string' distribution, and lines connecting their centers are consistent with the strike of the marble. Such sinkholes are mainly formed due to changes in the dynamic conditions of groundwater caused by de-watering activity. Furthermore, the development level of the collapse mainly depends on the location and scale of the karst caves within the marble. Mixed collapse occurs in the initial mining stage and mainly results from the combined effect of underground orebody excavation and de watering activity. Mining-induced ground-surface collapse pits mostly develop in the diorite and homstone and generally show a zonal distribution along the strike of the orebodies from east to west. Mining-induced collapse occurs in the form of chimney caving. First, a caved pipe is formed where the rock masses above the caved zone are highly fractured. Then, the rock masses around the caved pipe gradually cave, and finally a large caved-zone is formed above the mined-out area. Mixed collapse is of particular interest as it is a peculiar type of subsidence involving the superposition of collapse processes related to both mining and karst cavities, and it can provide some instructive insight into the collapsing behavior of the ground-surface. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000460186500012 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/15067]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Kaizong,Chen, Congxin,Zheng, Yun,et al. Engineering geology and ground collapse mechanism in the Chengchao Iron-ore Mine in China[J]. ENGINEERING GEOLOGY,2019,249(-):129-147. |
| APA | Xia, Kaizong.,Chen, Congxin.,Zheng, Yun.,Zhang, Haina.,Liu, Xiumin.,...&Yang, Kuoyu.(2019).Engineering geology and ground collapse mechanism in the Chengchao Iron-ore Mine in China.ENGINEERING GEOLOGY,249(-),129-147. |
| MLA | Xia, Kaizong,et al."Engineering geology and ground collapse mechanism in the Chengchao Iron-ore Mine in China".ENGINEERING GEOLOGY 249.-(2019):129-147. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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